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Add 3/42 and 9/70

3/42 + 9/70 is 1/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 70 is 210
  2. For the 1st fraction, since 42 × 5 = 210,
    3/42 = 3 × 5/42 × 5 = 15/210
  3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
    9/70 = 9 × 3/70 × 3 = 27/210
  4. Add the two fractions:
    15/210 + 27/210 = 15 + 27/210 = 42/210
  5. After reducing the fraction, the answer is 1/5

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